Riveting-machine.



F.'F. KENNEY & W. J. ELLiOTT.

RIVETING MACHINE.

APPLICATION FILED IUIIEZI. 1916. jl.

Patented Sept. 4, 191?.

2 SHEETS-SHEET l.

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QRHOMWIQS F. P. KENNE'Y I W. J. ELLIOTT.

RIVETING MACHINE.

APPLICATION FILED IHNEN. |916.

Patented Sept. 4, 1917.

2 SHEETS-SHEET 2.

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I t!" d. ELLEQTT, 0F PADELPHJIA, SYLV.

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peciucation of Letters Patent.

Patented nept. 4l, 1.2i '3.

Application filed June 27, 1913. Serial No. 106,113.

To all whom t may concern:

Be it known that we, FRANcIs' P. Kenner and WILLIAM J. Emo'rr, ofPhiladel hia, in the county of Philadelphia and. tate of Pennsylvania,lhave, invented certain new and useful Improvements in Rlvetmg-Machimes,lwhereof the following is a specification, reference being'had to theaccompanying drawings. U n

The vinvention relates to riveting machlnes and more particularly tothat type of riveting. machine adapted to be used 1n connection withheavyplates, such as are used 1n boilers and the like, and also forbridge and structural work. o

In machines of this type, the work which is being riveted is suspendedbetween the riveting dies and has a tendency to swing, and drlft out ofline, or ahead-and away from the plunger die, due to the momentum causedby the thrust of the plunger die and the suddenretarding in velocitycaused by the rivet encountering the stationary die.

An object of the invention is'l to provide means for holding the work inoperative position so as to prevent it from swinging or Another objectis to provide a cushioning means, whereby the work is properly spacedfrom the stationary die and the shock of the encounter `minirnized, soas to prevent the possibility of the rivet being canted or pushed out inback.

Still anotherobject is to provide `means tor alining the work so thatthe rivet 1s always brought in position directly between the two dies. Oe

With these andother obJects 1n view, we provide cushioning means, suchas plungers, in connection with both the movableand stau tionary dies.rhese plungers project forward in advance of both dies and engage andsteady the work so as to prevent it from swinging when the dies engagethe rivet. We further provide that the'heads of the plungers' are soshaped and spaced as to engage the heads of the rivets on either side'of the one being upset, so as to hold the rivet in exact Aalinementbetween the dies.

Referring to the drawings, ligure l, is a diagrammatic plan view showlnga pprtion oi a riveting machine and the adaptation of our inventionthereto.

Fig. Il, is a similar view illustrating the machine 1n rivetingposition.

Fig. lill, is a view of tbe same, partly in elevation and partly insection. I I A. machine constructed according to our lnvention comprisesgenerally jaws 1, 1, which terminate in head 2, which carries stationarydie 3, and headl 4, which houses the movable or plunger die 5.

Mounted on head 2,v on either side'ot die 3, are cushioning plungers 8,and 9. These plungers work in cylinders 10, and 11,'and are providedwith adjustable heads 12, and 13, appropriately recessed at 14:, and 15,to engage rivet heads 62, and 63. By engaging the rivet heads theplungers serve not only to center the work 16, but also to properlyspace it, from stationary die 3, so that it is at the proper distancewhen rivet blank 17, which is to be upset is rst engaged by movable die5. This s acing distance may be adjusted by means o bolt and screwconnections 19, see Fig. Hl.

Similarly mounted on head 4, and on either side of movable die 5, areadvancing plungers 20, and 21. rIhese plungers work in cylinders 22, and23, and are provided with adjustable socket heads 24, and 25,appropriately recessed at 26, and 27, and adapted to engage rivet heads60, and 61, on the opposite ends of rivet heads 62, and 63, engaged byadjustable socket heads 14:, and 15.

Plungers 20, and 21, may be operated by 1 any appropriate pneumatic orhydraulic means which may conveniently be drawn 'from the same source asthat used to operate movable die 5. ln the embodiment shown in thedrawings, the Huid enters through inlet pipe 30, controlled by valve 3l.VWhen the valve is in the position shown in uid is admitted throughpipes 32, to the forward ends of cylinders 22, and the plungers aremoved to their back- .ward position as shown. lin this position valve31, also connects pipes 34, and 35, with outlet pipe 36, so that anyHuid which may have been in the rear ends of cylinders 22,

and 33, and 23,

Fig. l,

and 23, is thereby allowed to escape. When,

ilo

relationto movable die 5, that when pressure is admitted they moveforward to ether with the plungers in advance of the ie, as shown in thedrawings. In this way the iirst contact with v,the work is made byadjustable socket heads 24,and 25, which engage rivet heads 60, and 61,on either side of rivet blank 17. In order that'the socket heads may bein a proper position to engagie these-rivet heads, they may be laterallya justed by means of bolt and screw connec tions 40, and 41, by whichthe distance between cylinders 22, and 23, may be varied.l So also theangle atwhich the socket heads are set, may be adjusted by means ofcrowned connections 42, and 43, best shown in Fig. III. After sockets24, and 25, have engaged their respective rivet heads lungers 20, and21, move the whole wor toward stationary die 3, until rivet heads 62,and 63, on the other side are engaged by socket heads 12, and 13. Theseheads are also adjustable by means of similar crowned connections 44,and 45, and capable of lateral regulation by means of screw boltconnections 46, and 47. In this positionthe engagement of thek rivetheads by the socket heads holds the work firmly so as to be in capableof any swinging or driftin motlon.

The work is, however, only he d under a yielding pressure, by each ofthe plungers 8 and 9. These plungers are 'identlcal and a description ofone will, therefore, suiiice for both. Plunger 9, is formed with a head50, adapted to slide in cylinder 11, under the action of a spring 51,which abuts against head 52. Head 52, is controlled by set screw 53, andby means of it the tension of the spring may be regulated. The tensionof the springs, however, is not suiiicient to ali'ect the action ofmovable die 5, when it moves forward and upsets rivet 17; consequently,it carries the whole work with it until tpe parts are in the positionshown in Fi .I

n operation the work is suspended be-A tween jaws 1,'1, and the rivetblank to. be upset put in place. The distance between plungers isregulated and the socket heads set at the proper angle to engage the adjacent rivet heads. If no rivets have been driven before, dummy rivetheads are placed in the holes so that the work may be properly engagedand centered. Valve '31, 1s turned as shown in Fig. II, so that plungers20, and 21, move forward and together with plungers 8, and 9, engage thework, so that rivet blank 17, is accurately centered and the work isproperly s aced from stationary die 3,when the rivet lank receives theimpact from movable die 5.

The effect of cushioning plungers 8, and 9, is to hold the work in sucha position that practically no further motion of the Work takes placeand both heads are formed practically simultaneously at vthe firstmoment of contact of movable die 5, with rivet blank '17. What littlemovement there is, due to the iattening of the ends of rivet blank 17 istaken up by cushioning springs 51, which yield to the impact of movabledie 5, upon the work. At the same time advancing plungers 20, and 21,being under pressure, move forward correspondingly so that the work -isalways held and kept 1n its proper relative position.

Having thus described our invention, we claim:

1. In a riveting machine the combination of a movable die and astatlonary die; means connected with both of said dies adapted tocoperate to engage the work, whereby the work is properly centered inrelation to said dies.

` 2. In a riveting machine, the combination of a movable die and astationary die, means coperating with said stationary die for spacingthe work therefrom, and meanscooperating with both of said dies forcentering the work between the stationary and movable dies. Y

3. In a riveting machine, the combination of a movable die and astationary die, means coperating with said dies adapted to engage rivetheads in the work whereby the work is properly centered between thestationary and movable dies.

4.1 In a riveting machine, the combination of a stationary die and amovable die, a plunger mounted adjacent said stationary die adapted toengage a rivet head in the work to be riveted, whereby the work isproperly centered and spaced from said stationary die.

5. In a riveting machine, the combination of a stationary die and almovable die, a plunger mounted adjacent said stationary die adapted toengage a rivet head inthe work to be riveted, whereby the work isproperly spaced from said stationary die, and means for cushioning saidplunger.

6. In a riveting'machine, the combination loq of a stationary die and amovable die, a

plunger mounted adjacent said stationary die, a socket head, mounted onsaid plunger, said socket head being recessed to engage a rivet head onthe work being riveted.

7. In a riveting machine, the combination of a stationary die and amovable die, a plunger mounted adjacent said stationary die, a sockethead mounted on said plunger and recessed to engage a rivet head on thework being riveted, and means for adjusting said socket head. v v

8. In a riveting machine, the combination of a stationary die and amovable die, a plunger mounted adjacent said stationary die, saidplunger being adapted to slide in a cylinder under the tension of aspring, and toI engage a rivet head in the work benaeegves ing riveted,whereby the work is properly centered and spaced from said stationarydie.

9. In a riveting machine, the combination of a stationary die and amovable die, a plunger mounted adjacent said stationary die, saidplunger being adapted to slide in a cylinder, and means for adjustingsaid cylinder in relation to said stationary die.

10. In a riveting machine, the combination of a stationary die and a`movable die, plungers mounted on either side of said stationary dieadapted to engage rivet heads in the work being riveted, and means foradjusting the distance between said plungers. j

11. In a riveting machine, the combination of a stationary die, and amovable die, plungers mounted adjacent said movable die, adapted toengage rivet heads in the work being riveted, whereby the work isproperly alined between said dies.

12. In a riveting machine, the combination of a stationary die, and amovable die, a plunger mounted adjacent said movable die, a socket headmounted on -said plunger, said socket head being recessed to engage arivet head.

13. In a riveting machine, the combination of a stationary die, and amovable die, a plunger mounted adjacent said movable d1e, a socket headmounted on said plunger and recessed to engage a rivet head, and meansfor adjusting said socket head.

14. In a riveting machine, the combinatlon of a stationary die and amovable die; a cylinder mounted adjacent to `said movable die; a plungeradapted to slide in said cylinder and pneumatic connections whereby saidplunger is moved forwardin advance of said die, so as to engage the workand roperly space it in relation to said mova le die. i

15. In a'riveting machine, the combination of a stationary die, and amovable die,

plungers mounted on either side of said movable die adapted to engagerivet heads in the work being rivet/ed, and means for adjusting thedistance between ,said plungers.

16. in a riveting machine, the 'combination of a stationary die, and amovable die, a plunger mounted adjacent said stationary die adapted toengage the head on one end of a rivet in the work being riveted, and adie adapted to engage the head on one end of a rivet in the work beingriveted, a plunger mounted adjacent said movable die adapted to engagethe head on the other end of said rivet, and means whereby said plungeradjacent the movable die moves forward to engage its rivet head and4carries the work forward, so that the head on the other end of therivet is engaged by the plunger mounted adjacent the stationary die.

18. ln a riveting machine, the combination of a stationary die, and amovable die, plungers mounted adjacent said stationary die adapted toengage the heads on rivets, in the work being riveted, plungers mountedadjacent the movable die adapted to engage the heads on the other endsof said rivets, and means for adjusting said plungers so that they arein proper position to engage said rivet heads.

in testimony whereof we have hereunto signed our names, at Philadelphia,Pennsylvania, this nineteenth day of June, 1916.

FRANCIS i?. KENNEY. lLdAM J. ELLUTT.

Witnessesz.

farms H. Bann, E. L. Fiori.'

